I think I might of found the issue with at least the random trunk opening; apparently BMW set the trunk unlock button to active after .5 seconds, stock.
Wearing tight-ish cloths or any object that slightly depresses the button, inadvertently opens the trunk. The resistance for the remote is pretty low.
The dealer obvious would be "unable to duplicate the issue" so what I suggest you do is code the truck release to commence after a 5 seconds delay. This should eliminate all intermitted trunk opening.
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